
import java.util.Scanner;
public class Zuoye {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            while (scanner.hasNextInt()) {
                int x = scanner.nextInt();
                int y = scanner.nextInt();
                Data data = new Data(x,y);
                System.out.println(data.getX() + data.getY());
            }
        }
    }
class Data {
    public int x;
    public int y;
    public Data(int x, int y) {
        this.x = x;
        this.y = y;
    }
    public int getX() {
        return x;
    }
    public int getY() {
        return y;
    }
}

